Could The Bulging Of Stomach Be Due To Cysts In The Ovaries Or Pregnancy?

Last month a got my period a few days early during protected sex and a few days later I had unprotected sex but he pulled out and a few days after that I started spotting bright orange for about a day, a few days later I started urinating very frequently, I gained 5lbs and my stomach is a bit bigger, noticable but I don not think I'm pregnant but could this be related to my ovaries having cysts? I have nausea, vomiting yesterday, craving for spicy stuff mostly jalapenos, I can't drink soda anymore is to much for me, well just a bit of Dr, pepper, I don't get hungry much, some constipation, fatigue, and mild cramps.